Submission #226207

#	Time	Username	Problem	Language	Result	Execution time	Memory
226207		zoooma13	Xoractive (IZhO19_xoractive)	C++14	0 / 100	8 ms	512 KiB

Xoractive

#include "bits/stdc++.h"
#include "interactive.h"
using namespace std;

vector<int> guess(int n){
	vector <int> ans(n); ans[0] = ask(1);
    map <int ,int> pos;

    int lg2 = 31-__builtin_clz(n);
    for(int b=0; b<=lg2; b++){
        vector <int> ids{1};
        for(int i=2; i<=n; i++)
            if(i&(1<<b))
                ids.push_back(i);

        auto vv = get_pairwise_xor(ids);
        multiset <int> vals = multiset<int>{vv.begin() ,vv.end()};
        ids.erase(ids.begin());
        for(int r : get_pairwise_xor(ids))
            vals.erase(vals.find(r));
        for(int r : vals)
            pos[r^ans[0]] |= (1<<b);
    }

    for(auto&p : pos)
        ans[p.second-1] = p.first;
	return ans;
}

Compilation message (stderr)

Xoractive.cpp: In function 'std::vector<int> guess(int)':
Xoractive.cpp:25:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(auto&p : pos)
     ^~~
Xoractive.cpp:27:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  return ans;
  ^~~~~~

• Subtask 1: 0 / 6
• Subtask 2: 0 / 94